I was flipping through my Billie photos on my computer last night and decided to play a little game where I state which era a particular photo is from as fast as I can (specifically "is it AI or 21CB?"). I discovered by doing this that sometimes it's difficult to discern, especially late AI Billie when he had longer, fluffier hair. This just reinforces how ageless he can be. For example:
The first is AI, the second is 21CB. Almost identical except for the level of eye makeup.
I know for a fact the first two are AI and the second two are 21CB, but if I didn't already, it would be difficult to tell.
These two I highly suspect are AI, but I don't know for sure and it's honestly anyone's guess.
A handful of times I had to double take to decide whether a photo was 21CB or RevRad! How does he do it?!